ICD-10

ICD-10 code C4A.20

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- ICD-10-CM
TABULAR LIST of DISEASES and INJURIES
- C00-D49
Neoplasms
- C00-C96
Malignant neoplasms
- C00-C75
Malignant neoplasms, stated or presumed to be primary (of specified sites), and certain specified histologies, except neuroendocrine, and of lymphoid, hematopoietic and related tissue
- C43-C44
Melanoma and other malignant neoplasms of skin
- C4A
Merkel cell carcinoma
- C4A.2
Merkel cell carcinoma of ear and external auricular canal

C4A.20

Merkel cell carcinoma of unspecified ear and external auricular canal

ICD-10 code C4A.20 for Merkel cell carcinoma of unspecified ear and external auricular canal

ICD-10
ATC
ICD-10 International Statistical Classification of Diseases and Related Health Problems 10th Revision
ICD-10

ICD-10 is the 10th revision of the International Statistical Classification of Diseases and Related Health Problems (ICD), a medical classification list by the World Health Organization (WHO).

It contains codes for diseases, signs and symptoms, abnormal findings, complaints, social circumstances, and external causes of injury or diseases.

ATC

The Anatomical Therapeutic Chemical (ATC) Classification System is used for the classification of active ingredients of drugs according to the organ or system on which they act and their therapeutic, pharmacological and chemical properties.

It is controlled by the World Health Organization Collaborating Centre for Drug Statistics Methodology (WHOCC).

DDD

The defined daily dose (DDD) is a statistical measure of drug consumption, defined by the World Health Organization (WHO).

It is used to standardize the comparison of drug usage between different drugs or between different health care environments.

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